Configures a collection or array as ordered or not (boolean extension). By default OpenAccess ORM preserves the order of elements in lists and arrays by adding a sequence column to the table used to store the elements. If the order is not important use this option to disable ordering. This extension is also useful in conjunction with the Ordering extension to order a list based on an OQL ordering expression.
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<field name="emailList">
<collection element-type="System.String">
<extension key="ordered" value="false" />
</collection>
</field>
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